The following document originals are required, One proof of ID confirming the purchasers address and One proof of entitlement to prove you can use the registration
The New keeper’s details section (V5C/2) of the V5C
A Certificate of Entitlement (V750)
A Retention Document (V778)
A reminder to get vehicle tax or make a Statutory Off-Road Notification (SORN) (V11) or (V11(NI))
A Temporary Registration Certificate (V379)
A Number Plate Authorisation Certificate (V948/EV948) with an official DVLA stamp
A letter of authorisation from a fleet operator, lease company or hire company (the letter must quote the document reference number from the V5C, not the vehicle identification number.)